Numéro |
J. Phys. IV France
Volume 123, March 2005
|
|
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Page(s) | 381 - 386 | |
DOI | https://doi.org/10.1051/jp4:2005123070 |
J. Phys. IV France 123 (2005) 381-386
DOI: 10.1051/jp4:2005123070
Preparation and caracterization of TiO2 powder photocatalysts. Comparative studies of photocatalytic activity in the degradation of
-naphthol
S. Qourzal1, M. Tamimi1, A. Assabbane1, A. Nounah1, N. Maroufi1, A. Bouamrane2 and Y. Ait Ichou1 1 Laboratoire de Chimie Physique, Équipe de Photocatalyse et Environnement, Département de Chimie, Faculté des Sciences, Université Ibn Zohr, BP. 8106, Cité Dakhla, Agadir, Maroc
2 Laboratoire d'Analyse Environnementale des Procédés et Systèmes Industriels, LAEPSI INSA Lyon, 69562 Villeurbanne Cedex, France
Abstract
Titanium dioxide TiO2 powder photocatalysts were
prepared at the laboratory by two methods: hydrolysis of titanium
tetraisopropoxide (TTIP) and the precipitation of a precursor starting from
titanium tetrachloride TiCl4 in basic medium. The products obtained are
calcined at temperatures around 800C. Their characterization was
carried out by both diffraction X-ray (XRD) and thermogravimetric analysis
(TGA). The photocatalytic activity of the elaborate solids (TiO2) is
evaluated. It is compared with that given for commercial TiO2 "Degussa
P-25" in the degradation of
-naphthol chosen as an model molecule
in aqueous suspension. These reactions are done at room temperature in a
photochemical reactor.
Key words: Preparation; TiO2; Photocatalysis; Photodegradation;

© EDP Sciences 2005